1968 Buick GS 400 Engine Internals

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1968 Buick GS 400 in Top Shape with Quality Engine Internals

Whether you’re repairing or upgrading your Engine Internal, using high-quality parts is key to keeping your 1968 Buick GS 400 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Standard Piston Rings, Oversized Individual Rod Bearing, and Oversized Main Bearings. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 1968 Buick GS 400 Engine Internal at Advance Auto Parts is around $87.44, with a range that starts at $11.49 and goes up to $111.99. With 10 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 20, Sealed Power Engine Crankshaft Main Bearing Set, 4664M, and Sealed Power Engine Crankshaft Main Bearing Set, 4664M 10 start at just $66.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Internal, don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1968 Buick GS 400 in peak condition, inside and out.

Essential 1968 Buick GS 400 Engine Internals

Sealed Power – Sealed Power Engine Piston Ring Set, E-286K 30 (Part No.E-286K 30)

Sealed Power Engine Piston Ring Set, E-286K 30

from

$111.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-286K (Part No.E-286K)

Sealed Power Engine Piston Ring Set, E-286K

from

$106.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-286K 40 (Part No.E-286K 40)

Sealed Power Engine Piston Ring Set, E-286K 40

from

$99.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 20 (Part No.8-3320CP 20)

Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 20

from

$66.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 10 (Part No.8-3320CP 10)

Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 10

from

$64.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 10 (Part No.4664M 10)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 10

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 30 (Part No.4664M 30)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 30

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M (Part No.4664M)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 20 (Part No.4664M 20)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 20

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3320CP 10 (Part No.3320CP 10)

Sealed Power Engine Connecting Rod Bearing, 3320CP 10

from

$11.49
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Most Popular Standard Piston Rings for 1968 Buick GS 400s

Enhance your 1968 Buick GS 400 with one of the 2 Standard Piston Rings we have in stock, starting at just $99.99.

Sealed Power – Sealed Power Engine Piston Ring Set, E-286K (Part No.E-286K)

Sealed Power Engine Piston Ring Set, E-286K

from

$106.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-286K 40 (Part No.E-286K 40)

Sealed Power Engine Piston Ring Set, E-286K 40

from

$99.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Best-Selling 1968 Buick GS 400 Oversized Individual Rod Bearing

Upgrade your GS 400 with our best-selling Oversized Individual Rod Bearing.

Sealed Power – Sealed Power Engine Connecting Rod Bearing, 3320CP 10 (Part No.3320CP 10)

Sealed Power Engine Connecting Rod Bearing, 3320CP 10

from

$11.49
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Top-Quality Oversized Main Bearings for 1968 Buick GS 400s

Choose a high-quality OEM or aftermarket Oversized Main Bearing for Buick GS 400s and enjoy top-notch performance from $102.99.

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M (Part No.4664M)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 10 (Part No.4664M 10)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 10

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 30 (Part No.4664M 30)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 30

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 4664M 20 (Part No.4664M 20)

Sealed Power Engine Crankshaft Main Bearing Set, 4664M 20

from

$102.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Our Top Pick for a 1968 Buick GS 400 Oversized Rod Bearing Set

Invest in a durable Oversized Rod Bearing Set for your 1968 Buick, knowing you’re getting trusted brands and expert craftsmanship.

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 20 (Part No.8-3320CP 20)

Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 20

from

$66.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

Our Standard Rod Bearing Sets for 1968 Buick GS 400s

Make a smart move for your 1968 Buick GS 400 with our Standard Rod Bearing Set for $64.99.

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 10 (Part No.8-3320CP 10)

Sealed Power Engine Connecting Rod Bearing Set, 8-3320CP 10

from

$64.99
Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.
See More

FAQs for 1968 Buick GS 400 Engine Internals

What are the best-selling Engine Internals for 1968 Buick GS 400s?

Out of 10 Engine Internals that fit 1968 Buick GS 400s, the following parts are the top sellers:

What’s the price range for 1968 Buick GS 400 Engine Internals?

The prices of Engine Internals for the 1968 Buick GS 400 range from $11.49 up to $111.99 for the most premium parts.

What is the average price of an Engine Internal for a 1968 Buick GS 400?

The average price for Engine Internals for the 1968 Buick GS 400 is $87.44. Keep in mind the variety of part types within our Engine Internal category, where you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Engine Internals for my 1968 Buick GS 400?

Does Advance Auto Parts sell Engine Internals for any other 1968 Buick models?

Yes. We stock Engine Internals for 7 other popular 1968 Buick models. Some of the most popular are 1968 LeSabre Engine Internals, 1968 Skylark Engine Internals, 1968 Riviera Engine Internals, 1968 Electra Engine Internals, and 1968 Special Engine Internals.

What types of Engine Internals do you sell for my 1968 Buick GS 400?

As of 8/2/26, these are some of the most in-demand types of Engine Internals for a 1968 Buick GS 400:

Can I get help with 1968 Buick GS 400 Engine Internal orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Buick Engine Internals and more.

What is your return policy for Buick GS 400 Engine Internals?

Advance Auto Parts keeps returns simple. For new Buick GS 400 Engine Internals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.